US6074309A - Laminated lightweight inserts for golf club heads - Google Patents

Laminated lightweight inserts for golf club heads Download PDF

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Publication number
US6074309A
US6074309A US09175937 US17593798A US6074309A US 6074309 A US6074309 A US 6074309A US 09175937 US09175937 US 09175937 US 17593798 A US17593798 A US 17593798A US 6074309 A US6074309 A US 6074309A
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US
Grant status
Grant
Patent type
Prior art keywords
insert
outer
club
layer
head
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US09175937
Inventor
Steven J. Mahaffey
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Top-Flite Golf Co
Callaway Golf Co
Original Assignee
Top-Flite Golf Co
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Filing date
Publication date
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    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63BAPPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B53/00Golf clubs
    • A63B53/04Heads
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63BAPPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B53/00Golf clubs
    • A63B53/04Heads
    • A63B53/0466Heads wood-type
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63BAPPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B53/00Golf clubs
    • A63B53/04Heads
    • A63B53/047Heads iron-type
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63BAPPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B60/00Details or accessories of golf clubs, bats, rackets or the like
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63BAPPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B53/00Golf clubs
    • A63B53/04Heads
    • A63B2053/0408Heads with defined dimensions
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63BAPPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B53/00Golf clubs
    • A63B53/04Heads
    • A63B2053/0416Heads with an impact surface provided by a face insert
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63BAPPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B2209/00Characteristics of used materials

Abstract

Golf club heads, both woods and irons, have recessed areas in the striking faces of the club heads with an insert secured therein. The insert is of a laminated structure having multiple layers and so constructed that the outer layers are of a substantially high strength to weight material and the center layers are of a relatively lower weight material. This structure allows the insert to be reduced in weight so as to allow the weight difference to be repositioned about the perimeter of the club head to achieve optimum weight distribution. One of the outer layers is preferably perforated to permit visual inspection of the center layer.

Description

BACKGROUND OF THE INVENTION

This application is a continuation-in-part of U.S. application Ser. No. 08/637,029, filed Apr. 24, 1996, now U.S. Pat. No. 5,827,131.

This invention relates generally to golf club heads and more specifically to golf club heads having inserts in the striking face.

Golf clubs are designated primarily in separate categories of woods, irons, and putters. The majority of golf club woods at the present time are made of some metal or composition, while most irons are made of varying types of metal. Woods can be constructed of solid metal or can be constructed so as to have recesses in which a face or insert is placed in the striking surface. While most irons are made of metal, some also have recesses for accepting inserts for the striking face.

It is recognized that advantages are provided by redistributing the weight of golf clubs in both woods and irons so that the weight around the perimeter of the head increases to increase the moment of inertia, thereby increasing head stability, which in turn lessens head rotation that imparts side spin on the ball. This creates either a hook or slice (in the same manner as a gear effect) through impact on off-center hits.

The present invention discloses the use of various modifications of inserts so configured that part of the weight of the insert used can be redistributed to the perimeter of the head so as to increase the moment of the head.

This and other objects will become apparent from the following description taken together with the drawings.

SUMMARY OF THE INVENTION

The present invention provides golf club heads, both woods and irons, with recessed areas in the striking faces of the club heads and an insert secured within the recessed areas. The insert is of a laminated structure having multiple layers and is so constructed that the outer layers are of a substantially high strength to weight material and the center layer is of a relatively lower weight material. This structure allows the face thickness of the insert to be minimized with the major portions of the material previously required in the face to be repositioned about the perimeter of the club head to achieve optimum weight distribution. Preferably, at least one of the outer layers is perforated to provide viewing access to the center layer.

BRIEF DESCRIPTION OF THE FIGURES

FIGS. 1 and 2 are sectional views of wood-type and iron-type golf club heads, respectively, having inserts connected therewith according to a first embodiment;

FIGS. 3 and 4 are sectional views of wood-type and iron-type golf club heads, respectively, having inserts connected therewith according to a second embodiment;

FIG. 5 is an exploded view of the laminated insert according to the invention;

FIG. 6 is a diagram illustrating the tensile forces in the laminated insert of the invention; and

FIGS. 7a-7d are exploded views of a laminated insert illustrating various types of perforations, respectively, in the outer layers thereof according to a further embodiment of the invention.

DETAILED DESCRIPTION

FIG. 1 shows a metal wood 11 having a crown 13, a hosel 15, and a sole 23, with a face structure 19 having a recess 17 therein. In this particular configuration, the recess includes a lip surrounding the recess and the insert 21 is configured so as to fit within the recess and be secured therein adjacent the lip. This is commonly referred to as an unsupported insert since the club head does not have a complete surface backing adjacent the major portion of the insert.

FIG. 2 shows an iron 30 having a sole 31, a top edge 33, and a recess 35. Again this recess has a lip against which the insert 37 is placed. This also provides an iron with an unsupported face insert.

FIG. 3 shows a metal wood 40 having a crown 41, a sole 43, and a recess 47 in the face, with the recess terminating in a thin plate member 45 at the interior of the club head. Plate member 45 preferably has a thickness between 0.030 inch and 0.120 inch. Insert 49 is secured within the recess and abuts against plate 45.

FIG. 4 shows an iron 50 having a sole 53, an upper ridge 51, and a cavity 55, with a recess 56 being backed by a thin plate 57. Plate 57 is of a thickness between 0.030 and 0.120 inch. In this type of iron, insert 59 is secured within the recess and abuts against metal layer 57.

While the inserts of the present invention are of a laminate structure, such structure is not shown specifically in the FIGS. 1-4 for purposes of clarity.

FIG. 5 shows an insert 60, which is a laminate comprised of outer layers 61 and 63 and an inner layer 65. In order to reduce the weight at the center, the outer layers 61 and 63 are of a high strength material such as 6-4 titanium and are of a reduced thickness between 0.025 inch and 0.100 inch. Inner layer 65 is of a lighter weight material such as compression molded graphite.

FIG. 6 is a schematic illustration of the principle of the present invention. The insert of the present invention is similar to a beam or bridge in theory. During impact, a force F causes face 67 to flex rearwardly as it exerts force on the ball in the forward direction opposite force F. The insert acts as a beam or a bridge. For a regular insert of one material and thickness, when the face flexes rearwardly, its outer surface is in compression and also withstands the highest stress levels. These forces are shown in section 71. Rearward surface 69 is in tension equal and opposite to the face compression, with tension being illustrated in section 73 of FIG. 6.

All sections between the outer surfaces are in varying degrees of tension and compression in relation to the axis X of the moment of inertia shown in the cross section. At axis F, the stress is 0.

With the design of the present insert, since the center axis sees relatively low bending stresses, as much weight as possible is removed from that center section without degrading the structure to the point where failure will occur. In this design, the materials of a multi-laminated insert match the maximum stress for the material with its relation to the axis of the moment of inertia of the insert and the forces applied thereto. Accordingly, the optimum lightweight insert can be formed using this laminated structure. As set forth above, this permits the positioning of the removed weight of the insert about the periphery of the club head.

The following list presents examples of further materials which may be used for the inserts:

______________________________________MATERIAL      TENSILE    YIELD   DENSITY______________________________________356 ALUMINUM  40000      27000   0.0977075 ALUMINUM         83000                         73000                                   0.101FORGING BRASS        55000                         20000                                   0.305BE-CU                       90000                                   0.297304 STAINLESS       85000                         35000                                   0.290431 STAINLESS       125000                        95000                                   0.28017-4 STAINLESS               150000                        110000                                  0.28099.0% TITANIUM               79000                         63000                                   0.1636.4 TITANIUM          135000                        120000                                  0.160______________________________________

An example of the use of some of the above materials for construction of the laminate follows:

______________________________________FACE          CENTER        BACK______________________________________17-4 STAINLESS         99.0% TITANIUM                       17-4 STAINLESS6-4 TITANIUM       7075 ALUMINUM                           6-4 TITANIUMBE-CU                  356 ALUMINUM                                             BE-CUFORGING BRASS      356 ALUMINUM                           FORGING BRASS431 STAINLESS     7075 ALUMINUM                           17-4 STAINLESS304 STAINLESS     356 ALUMINUM                           7075 ALUMINUM431 STAINLESS     7075 ALUMINUM                          431 STAINLESS______________________________________

Referring now to FIGS. 7a-7d, another embodiment of the invention will be described. Shown therein is a laminated insert 80 comprising a face outer layer 81, a rear outer layer 83, and a center layer 85. This insert is for use in an iron-type club head without a backing plate such as shown in FIG. 2. The layers are formed of the same materials as set forth above in connection with the insert shown in FIG. 5. However, the rear outer layer 83 contains at least one perforation or through-opening which may have a circular configuration (87a, FIG. 7a), a rectangular configuration (87b, FIG. 7b), a square configuration (87c, FIG. 7c), an oval configuration (87d, FIG. 7d), or any other suitable geometric configuration which affords visual inspection of the center layer 5. This enables the user to confirm that the club head is in part a laminate because of the visibility of the center layer. The perforations may be hollow or may be filled with material from the center layer as a result of compression of the laminate during formation of the insert. Alternatively, the front outer layer 81 may contain one or more perforations 89. The perforations 87, 89 may have any configuration, including a distinctive logo. Perforations may be included in either outer layer, or both.

While in accordance with the provisions of the patent statute, the preferred forms and embodiment of the invention have been illustrated and described, it will be apparent to those of ordinary skill in the art, that various changes and modifications may be made without deviating from the inventive concepts set forth above.

Claims (6)

What is claimed is:
1. A golf club head comprising
(a) a striking face area containing a recess;
(b) an insert secured within said recess, an outer surface of said insert being substantially flush with a non-recessed portion of said striking face area; and
(c) said insert comprising a laminate including a pair of outer layers and at least one inner layer, said outer surface being arranged on one of said insert outer layers, at least one of said outer layers containing at least one perforation providing visual inspection of said inner layer, said outer layers being formed of materials having a higher strength than that of said at least one inner layer.
2. A golf club head as defined in claim 1, wherein said outer layer contains a plurality of spaced perforations.
3. A golf club head as defined in claim 2, wherein said perforations are hollow.
4. A golf club head as defined in claim 2, wherein said perforations are at least partially filled with material from said inner layer.
5. A golf club head as defined in claim 4, wherein said outer layers of said laminate are 6-4 titanium and said inner layers are compression molded graphite.
6. A golf club head as defined in claim 4, wherein said outer layers are formed of metal and have a greater weight than said at least one inner layer.
US09175937 1996-04-24 1998-10-21 Laminated lightweight inserts for golf club heads Expired - Lifetime US6074309A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US08637029 US5827131A (en) 1996-04-24 1996-04-24 Laminated lightweight inserts for golf club heads
US09175937 US6074309A (en) 1996-04-24 1998-10-21 Laminated lightweight inserts for golf club heads

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US09175937 US6074309A (en) 1996-04-24 1998-10-21 Laminated lightweight inserts for golf club heads
JP2000576920A JP2002527213A (en) 1998-10-21 1999-09-10 Laminate lightweight insert for a golf club head
CA 2315712 CA2315712C (en) 1998-10-21 1999-09-10 Laminated lightweight inserts for golf club heads
PCT/US1999/020639 WO2000023150A1 (en) 1998-10-21 1999-09-10 Laminated lightweight inserts for golf club heads
GB0015136A GB0015136D0 (en) 1998-10-21 1999-09-10 Laminated lightweight inserts for golf club heads

Related Parent Applications (1)

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US08637029 Continuation-In-Part US5827131A (en) 1996-04-24 1996-04-24 Laminated lightweight inserts for golf club heads

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US6074309A true US6074309A (en) 2000-06-13

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US (1) US6074309A (en)
JP (1) JP2002527213A (en)
CA (1) CA2315712C (en)
GB (1) GB0015136D0 (en)
WO (1) WO2000023150A1 (en)

Cited By (36)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003070332A1 (en) * 2002-02-19 2003-08-28 Spalding Sports Worldwide, Inc. Explosion bonded laminated face inserts for golf culbs
US20040157677A1 (en) * 2002-02-14 2004-08-12 The Top-Flite Golf Company Golf club set with variable thickness and/or density face inserts
US20050009624A1 (en) * 2003-05-27 2005-01-13 Long Dabbs Clayton Golf club head with a stiffening plate
US20070010346A1 (en) * 2003-08-13 2007-01-11 Acushnet Company Golf club head
US20080064523A1 (en) * 2006-09-08 2008-03-13 Chen Archer C C Method of adjusting coefficient of restitution of face of golf club head
US20080293511A1 (en) * 2003-08-13 2008-11-27 Gilbert Peter J Golf Club Head
US20090005191A1 (en) * 2007-06-27 2009-01-01 Taylor Made Golf Company, Inc. Golf club head and face insert
US20090264218A1 (en) * 2006-12-06 2009-10-22 Taylor Made Golf Company, Inc. Golf clubs and club-heads comprising a face plate having a central recess and flanking recesses
US20100190572A1 (en) * 2003-12-12 2010-07-29 Acushnet Company Spin milled grooves for a golf club
US7794333B2 (en) 2008-02-21 2010-09-14 Sri Sports Limited Strike face insert
US20120108357A1 (en) * 2010-11-02 2012-05-03 Takashi Nakamura Putter-type golf club head and putter-type golf club
US20120135821A1 (en) * 2010-11-30 2012-05-31 Nike, Inc. Golf Club Heads Or Other Ball Striking Devices Having Distributed Impact Response
US20120289363A1 (en) * 2010-07-08 2012-11-15 Myrhum Mark C Golf club head having a multi-material face
US20130072321A1 (en) * 2011-09-21 2013-03-21 Karsten Manufacturing Corporation Golf club face plates with internal cell lattices and related methods
US20130310192A1 (en) * 2012-05-16 2013-11-21 Taylor Made Golf Company, Inc., Golf club head with face insert
US9101808B2 (en) 2011-01-27 2015-08-11 Nike, Inc. Golf club head or other ball striking device having impact-influencing body features
US9149693B2 (en) 2009-01-20 2015-10-06 Nike, Inc. Golf club and golf club head structures
US9162115B1 (en) 2009-10-27 2015-10-20 Taylor Made Golf Company, Inc. Golf club head
US9168435B1 (en) 2014-06-20 2015-10-27 Nike, Inc. Golf club head or other ball striking device having impact-influencing body features
US9186547B2 (en) 2011-04-28 2015-11-17 Nike, Inc. Golf clubs and golf club heads
US9192831B2 (en) 2009-01-20 2015-11-24 Nike, Inc. Golf club and golf club head structures
US9278265B2 (en) 2009-07-24 2016-03-08 Nike, Inc. Golf club head or other ball striking device having impact-influencing body features
US9375624B2 (en) 2011-04-28 2016-06-28 Nike, Inc. Golf clubs and golf club heads
US9409073B2 (en) 2011-04-28 2016-08-09 Nike, Inc. Golf clubs and golf club heads
US9409076B2 (en) 2011-04-28 2016-08-09 Nike, Inc. Golf clubs and golf club heads
US9433844B2 (en) 2011-04-28 2016-09-06 Nike, Inc. Golf clubs and golf club heads
US9433845B2 (en) 2011-04-28 2016-09-06 Nike, Inc. Golf clubs and golf club heads
US9433834B2 (en) 2009-01-20 2016-09-06 Nike, Inc. Golf club and golf club head structures
US20160296809A1 (en) * 2011-11-28 2016-10-13 Acushnet Company Co-forged golf club head and method of manufacture
US9662551B2 (en) 2010-11-30 2017-05-30 Nike, Inc. Golf club head or other ball striking device having impact-influencing body features
US9717960B2 (en) 2010-07-08 2017-08-01 Acushnet Company Golf club head having a multi-material face
US9770632B2 (en) 2012-05-31 2017-09-26 Nike, Inc. Golf club head or other ball striking device having impact-influencing body features
US9795845B2 (en) 2009-01-20 2017-10-24 Karsten Manufacturing Corporation Golf club and golf club head structures
US9889347B2 (en) 2011-09-21 2018-02-13 Karsten Manufacturing Corporation Golf club face plates with internal cell lattices and related methods
US9914026B2 (en) 2014-06-20 2018-03-13 Karsten Manufacturing Corporation Golf club head or other ball striking device having impact-influencing body features
US9925428B2 (en) 2015-05-29 2018-03-27 Karsten Manufacturing Corporation Golf club head or other ball striking device having impact-influencing body features

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Cited By (84)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040157677A1 (en) * 2002-02-14 2004-08-12 The Top-Flite Golf Company Golf club set with variable thickness and/or density face inserts
US6986715B2 (en) 2002-02-19 2006-01-17 Callaway Golf Company Golf club head with a face insert
US20040209704A1 (en) * 2002-02-19 2004-10-21 Callaway Golf Company A golf club head with a face insert
GB2401798A (en) * 2002-02-19 2004-11-24 Spalding Sports Worldwide Inc Explosion bonded laminated face inserts for golf clubs
GB2401798B (en) * 2002-02-19 2005-12-07 Spalding Sports Worldwide Inc Explosion bonded laminated face inserts for golf clubs
WO2003070332A1 (en) * 2002-02-19 2003-08-28 Spalding Sports Worldwide, Inc. Explosion bonded laminated face inserts for golf culbs
US20050009624A1 (en) * 2003-05-27 2005-01-13 Long Dabbs Clayton Golf club head with a stiffening plate
US7192364B2 (en) * 2003-05-27 2007-03-20 Plus 2 International, Inc. Golf club head with a stiffening plate
US7846039B2 (en) * 2003-08-13 2010-12-07 Acushnet Company Golf club head
US7594862B2 (en) * 2003-08-13 2009-09-29 Acushnet Company Golf club head
US20070010346A1 (en) * 2003-08-13 2007-01-11 Acushnet Company Golf club head
US8128510B2 (en) 2003-08-13 2012-03-06 Acushnet Company Golf club head
US20110224016A1 (en) * 2003-08-13 2011-09-15 Gilbert Peter J Golf club head
US7909708B2 (en) 2003-08-13 2011-03-22 Acushnet Company Golf club head
US20080293511A1 (en) * 2003-08-13 2008-11-27 Gilbert Peter J Golf Club Head
US20100029405A1 (en) * 2003-08-13 2010-02-04 Gilbert Peter J Golf club head
US7955189B2 (en) 2003-12-12 2011-06-07 Acushnet Company Spin milled grooves for a golf club
US20100190572A1 (en) * 2003-12-12 2010-07-29 Acushnet Company Spin milled grooves for a golf club
US20080064523A1 (en) * 2006-09-08 2008-03-13 Chen Archer C C Method of adjusting coefficient of restitution of face of golf club head
US9199138B2 (en) * 2006-12-06 2015-12-01 Taylor Made Golf Company, Inc. Golf clubs and club-heads comprising a face plate having a central recess and flanking recesses
US20090264218A1 (en) * 2006-12-06 2009-10-22 Taylor Made Golf Company, Inc. Golf clubs and club-heads comprising a face plate having a central recess and flanking recesses
US9409066B2 (en) 2007-06-27 2016-08-09 Taylor Made Golf Company, Inc. Golf club head and face insert
US7985146B2 (en) * 2007-06-27 2011-07-26 Taylor Made Golf Company, Inc. Golf club head and face insert
US8684864B2 (en) 2007-06-27 2014-04-01 Taylor Made Golf Company, Inc. Golf club head and face insert
US20090005191A1 (en) * 2007-06-27 2009-01-01 Taylor Made Golf Company, Inc. Golf club head and face insert
US8105181B2 (en) 2008-02-21 2012-01-31 Sri Sports Limited Strike face insert
US7942757B2 (en) 2008-02-21 2011-05-17 Sri Sports Limited Strike face insert
US20100292026A1 (en) * 2008-02-21 2010-11-18 Sri Sports Limited Strike Face Insert
US7794333B2 (en) 2008-02-21 2010-09-14 Sri Sports Limited Strike face insert
US9446294B2 (en) 2009-01-20 2016-09-20 Nike, Inc. Golf club and golf club head structures
US9795845B2 (en) 2009-01-20 2017-10-24 Karsten Manufacturing Corporation Golf club and golf club head structures
US9192831B2 (en) 2009-01-20 2015-11-24 Nike, Inc. Golf club and golf club head structures
US9289661B2 (en) 2009-01-20 2016-03-22 Nike, Inc. Golf club and golf club head structures
US9950219B2 (en) 2009-01-20 2018-04-24 Karsten Manufacturing Corporation Golf club and golf club head structures
US9155944B2 (en) 2009-01-20 2015-10-13 Nike, Inc. Golf club and golf club head structures
US9149693B2 (en) 2009-01-20 2015-10-06 Nike, Inc. Golf club and golf club head structures
US9433834B2 (en) 2009-01-20 2016-09-06 Nike, Inc. Golf club and golf club head structures
US9278265B2 (en) 2009-07-24 2016-03-08 Nike, Inc. Golf club head or other ball striking device having impact-influencing body features
US9162115B1 (en) 2009-10-27 2015-10-20 Taylor Made Golf Company, Inc. Golf club head
US20120289363A1 (en) * 2010-07-08 2012-11-15 Myrhum Mark C Golf club head having a multi-material face
US9033818B2 (en) * 2010-07-08 2015-05-19 Acushnet Company Golf club head having a multi-material face
US9717960B2 (en) 2010-07-08 2017-08-01 Acushnet Company Golf club head having a multi-material face
US8979668B2 (en) * 2010-11-02 2015-03-17 Sri Sports Limited Putter-type golf club head and putter-type golf club
US20120108357A1 (en) * 2010-11-02 2012-05-03 Takashi Nakamura Putter-type golf club head and putter-type golf club
US20160151687A1 (en) * 2010-11-30 2016-06-02 Nike, Inc. Golf Club Heads or Other Ball Striking Devices Having Distributed Impact Response
US9908012B2 (en) * 2010-11-30 2018-03-06 Nike, Inc. Golf club heads or other ball striking devices having distributed impact response
US20120142447A1 (en) * 2010-11-30 2012-06-07 Nike, Inc. Golf Club Heads or Other Ball Striking Devices Having Distributed Impact Response
US20120135821A1 (en) * 2010-11-30 2012-05-31 Nike, Inc. Golf Club Heads Or Other Ball Striking Devices Having Distributed Impact Response
US9914025B2 (en) 2010-11-30 2018-03-13 Nike, Inc. Golf club heads or other ball striking devices having distributed impact response
US9662551B2 (en) 2010-11-30 2017-05-30 Nike, Inc. Golf club head or other ball striking device having impact-influencing body features
US20160151685A1 (en) * 2010-11-30 2016-06-02 Nike, Inc. Golf Club Heads or Other Ball Striking Devices Having Distributed Impact Response
US9089747B2 (en) * 2010-11-30 2015-07-28 Nike, Inc. Golf club heads or other ball striking devices having distributed impact response
US9908011B2 (en) * 2010-11-30 2018-03-06 Nike, Inc. Golf club heads or other ball striking devices having distributed impact response
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GB0015136D0 (en) 2000-08-09 grant
GB2346813A (en) 2000-08-23 application
CA2315712A1 (en) 2000-04-27 application
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CA2315712C (en) 2005-05-31 grant
JP2002527213A (en) 2002-08-27 application

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